Water-heater.



L. D. LOVEKINL' WATER HEATER.

APPLICATION FILED NOV. 8. 1907:

Patented Feb. 14, 1911.

5 SHEETSSHEET 1.

L. D. LOVEKIN.

WATER HEATER. v

APPLICATION FILED NOV. 8, 1907.

Patented Feb. 14,-1911.

5 SHEETS-SHEET 2.

Elf I '8 I YE/ITOR ATTORNEY.

WNESSES 1 L. 1). LO'VEKIN.

4 WATER HEATER. -APPLIOATION FILED NOV. 8, 1907.

983,912. Patented Feb. 14, 1911.

5 SHEETS-SHEBT 3.

G W l/1 WIfi/IESSES INVENTOR Arron/m.

L. 1). LOVEKIN.

WATER HEATER. APPLICATION FILED NOV. 8, 1907.

983,912. Patented Feb. 14, 19 11.

a sumsHUm s1.-

Mrnsssss: I r mmvr'on v I y W 2% ATTORNEY.

L. D. LOVEKIN. WATER HEATER. APPLICATION FILED NOV. 8, 1907.

Patented Feb. 14,1911.

5 SHEETS-8111537. 5.

A; ATTORNEY.

LUTHER D. LOVEKIN, F PHILADELPHIA, PENNSYLVANIA.

WATER-HEATER.

Specification of Letters Patent.

Patented 1 a). 14, 1911.

Application filed November 8, 1907. Serial No. 401,282;

To all whom it may concern: Be it known that I. LlI'llH-Ilt l).Lori-aux, a citizen of the United States of America, residing in thecity and county of Philadelphia, in the State of lcnnsyl ania, haveinvented a certain new and useful Improvement in ater-Heaters. of whichthe followin" is a-true and exact description, reference being had tothe accompanying drawings,

which form a part thereof.

The present invention relates to water heaters, and particularly toheaters for water in which the source of heat is the flame from a gas oroil burner.

The object of the invention is to provide a compact heater of simple anddurable construction in .which the container or containers for the waterto be heated is provided with heat. abstracting ribs to increase theextent of the'surface abstracting heat from the flame and transferringit to the water to be heated and to lengthen the path or paths throughwhich the hot gases from the'burncr travel in contact with the container'surface, thereby prolonging the time of contact and increasing thecfliciency of the heat abstraction from the gases.

A further object of the invention is to so arrange the parts that; thejoints iii the water 0 container or containers are removed fromproximity with the hotter portion of the heatinggases while at the sametime suitable provision is made for the proper circulation of the waterheated.

In the pre terrcd form of my invention the ribs are made hollow andcontain water to be heated, andthe container, or one of the containersof the heater. is. roughlyspcaking. in the form of a cylindrical bodyhav- 9 ing the hollow ribs at its periphery and is surroundedby anexternal body which may be a second container for waterto be heated ormay be of refractory material of poor heat conductivity which is itselfprovided with internal ribs which project' into the spaces between theribs of the internal contamer.

The various features of novelty which characterize the invention arepointed out with particularlity in the claims annexed to and 'forming:-a part of thc s wcitication. For a better understamlin; of theinvention, however. and the advantages possessed by it, reference maybe. had to the :un-ompanving drawings and descriptive matter in which Ihave illustrated forms in which my invention may be embodied..-

Of the drawings. Figure l. is a sectional elevation of one form of myinvention. Fig. 2 is a sectional plan taken on the line of Fig. 1. Fig.3 is a sectional elevation taken similarly to Fig. 1 showing a secondform of mv invention: Fig. t is a sectional elevation showinga thirdform of my invention. Fig. 5 is a sectional elevation showing a fourthform of the invention. Fi (3 is a sectional elevation showing a fifthform of the invention.

In the drawings. and referring first to the construction of Fig. 1, A,represents the container which is in the form of ahollow cylindricalbody having formed on it at intervals along its length a series ofhollow circular ribs A which are open internally to the interior of thecontainer proper. The container has an axial opening A formedv in itsupper end through which is inserted the inlet pipe B which extendsnearly to the bottom of the container A. At the side of the opening isformed an opening A into which is threaded the outlet conduit C. Thecontainer A is surrounded b a shell D formed of refractory materialhaving poor heat comluctivity. The shell D is provided. with internalcircular ribs D1 which extend into the spaces between the adjacenthollow ribs A of the container; In the form shown. the shell D isdivided into two simi-' lar parts having meeting surfaces D", and isincascd in a tubular shell or jacket E which connects the top and bottommembers F and G. The bottommemberGjsmounted on a. base mcmbcr TI towhich it may be integrally or 'detachably connected. The member ll ismounted on a pedestal II; and supports within the jacket a gas burner.T; J. representing a pilot burner for sta1 t in; ,the main burner J.The upper endmembcr F is provided with flanged openings F and F for theinlet and outlet pipes B and C. respectively, and with a flanged opcningF for the escape of the spent heatin; cases. The container may besupported from the top member of the heater, though by preference I.provide lugs A on the con-. tainer which engage the adjaccntportions ofthe shell D to position the parts, and may well serve as a means bywhich the. container is supported from the shell.

With the construction described it will he :1 container are located atthe extreme npperi observed that the only joints in the water end of theheater where they are removed from proximity to the hotter portions ofthe heating gases; The water passes down-- ward through the inletpipe Bto the lower end of the container,absorbing heat from of the hot gasesis abstracted before the gases escape through the opening F. 13y

- making the hollow ribs A thin in the axial direction, as shown, thewater spaces in them are made shallow,'so that the extent ofheatingsurface to volume of water in the heater at any instant is relativelylarge, thus adapting the device for use'as an 1nstantaneons heat-er. Itshould be observed that the'upper internal surface of each hollow ribslants upward to the center of the container, thus facilitating theproper circulation through the container.

The construction shown in Fig. 3 difi'ers from'that of Figs. 1 and'2 inthat in this case the circumferentially extending ribs on the outersurface of the .container are formed by the eonvolutions of a hollowcontinuous spiral or corrugation. Similarly the ribs on the 'aeket areformed in a continuous spiral WVith these arrangements the container Aand jacket D may be readily assembled by screwing the parts together,thus a'voidingthe necessity for dividing the jacket. 1) into parts,while at the same time all of the other advantages of the constructionfirst described are obtained. The spiral arrangement of ribs A and D?also possesses theadvantage of giving a. definite spiral whirl to the'heating gases from the burner J.

la the construction sh'own'in Fig. 4, the container is .provided onits'periphery with a continuous spiral A. which in this case. issolid,and the container A is surrounded by an external container,-the inncr.wall' of which is formed bya tubular member K, which is spirallycorrugated between its ends to formexternally projectinghollow ribs Kand corresponding grooves K The outer wall of the external container isformed by a. tubular member L provided with an internal thread L.

The members K and L may be readily. as-

sembled by threading them together as may the container A and theassembled external container. The members K and L when asscmblcd aresecured together at their-ends as by expanding the memberK. The external shell L in' the form shown is provided with a channeYL at itslower end from which leads the outlet pipe C, and at its jacket L.

upper end with a channel L? which is connect'ed by a conduit L to theupper end of the container A. --The inlet pipe B in this construction iscoupled into a member B which closes the central opening in the upperend of the container A, and has a tubular. extension B which extendsnearly to the-lower end of the. container proper. The

space between the internal and external containers lS closed by a topmember I. provided with tlangcd opening L tor the escape. of the spenthot gases. The container is supported in this case by lugs A" which bearuponthe upper-end of the member L, and the membcr'L is supported in turnby a base member L in which the burner J may be installed. The member Lis preferably incased in a heat insulating In.the form of the inventionshown in Fig. 4, it will be observed that the water to be heated passesin series from the tubular extension it through the internal container Aand l the external container. abstraction is facilitated by theprovision on each container of ribs which incrcase'the The heat heatingsurfaces and serve as battle plates to prolong the path of the hotgases. In this construction, as well as those previously;

described, the internal container is provided with ribs winch extendinto the spaces water container. 'The external container disclosed isnovelwith me, but is not specifically claimed herein asit formst'hcsubject matter of. my co-pending. application crial No. 401.231, tiledof even date hcrcwltln The. construction of Fig. 5 ditl'ers from that ofFig; -l in the followingrespects.

The external member of the internal con-' taincr A is substantiallyidentical with the' container A of Fig. l. The internal member B in thisconstruction, however. is termed d5 formed by ribs on the externaljacket, but" i in this case the-incasing acket is itself a" by a tubewhich isihreadcd into the cap member B, and has itsuppcr portion rcllOduccd in diameter, thus forming a shoulder B at a point between theupper and lower -cnds ot' the member l5, and preferably be-. tween thelower end and thc nnddle of the' member It. The reduced portion of themember B is surrounded by a acket B of tile or the like which serves asa heat insulator to prevent the abstraction of heat from-the waterpassing to the upper end of. the container A by the. inlet water. Inthis form the external container is formed by an internal tubular memberK, which is-uncorrugated and bears against the ribs L'f of the nicinber.L. thus form ng with themember L and the ribs L a spiralpassage Lfor the water passing through theexternal container.

It will of course be understood that the inlet pipes of theheaters'shown in Figs. 1, 3 and 4 may be surrounded by a heat insulatingpipe like the tube B of Fig. 5.

In Fig. (3 I have shown a construction which differs from that shown inFig. 4

merely in the fact that the rib A on the container A is made hollow,,whereas in Fig. 4 the corresponding rib A is solid, and in the factthat. the internal member I3 of the container is shaped sul stantiallylike the containerB of Fig. 5, the portion of the member B" aboveshoulder B being surrounded by a heat insulating jacket B and the lowerportion B of the member B being conical and conforn'iing with thegeneral contour of the lower end of the member A.

\Vhile in the construction shown in Figs.

1, 4, and 5 the inlet pipe to the central container must be separatedfrom the body of the container sullieiently to allow the tluid beingheated to ascend, it is apparent. that with the construction of Fig. 3it is not essential that any space should exist between the inlet pipeand the body of the central container as the hollow spiral'ribs in anycase permit the fluid heated to flow from the bottom to the top of thecontainer.

\Vhile in accordance with the provisions of the statutes I have hereindescribed and illustrated the best forms of my invention now known tome, it will be understood by those skilled in the art thatchanges may bemade in the forms disclosed without departing from the spirit of theinvention.

Having now described my invention, what;

,I claim as new and desire to secure by Letters Patent is, V

1. A water heater comprising a vertically disposed hollow watercontainer having closed ends and being formed with circumferentiallyextending heat al'istracting ribs on its outer surfac and provided withan outlet opening at its upper end and an inlet conduit. entering thecontainer at the upper end of the latter and extending through the waterspace thereof to a point adjacent the lower ml of the container, and aninclosing jacketsurroundingthe container and sepaated fronrit by a spaceforming a passage for the flow of a heating tluid. i 2. A water heatercomprising a vertically disposed water container formed withcircumferentially extending heat abstracting ribs on its outer surfaceand provided with an outlet tipening at its, upper end and aninletconduit leading through the upper endof the container to a pointadjacent the lower end of the container, a heat insulating jacketsurrounding the ripper portion of said inlet conduit, and an int-losingjacket surrounding the container and separated from it, by a. spaceforming a passage for l the flow of a heating fluid.

I 3. A water heater comprising a vertically 5 disposed water containerformed with cirtcumferentially extending heat abstracting ribs on itsouter surface, and provided with an outlet opening at its upper end andan internal conduit leading. through the upper its lower end-withashoulder, a, heat insulating jacket surrounding the upper portion ofsaid conduit and resting on said shoulder, and an inclosing jacketsurrounding the container and separated from it by a space forming apassagefor the flow of a heating fluid.

4. .A water heater comprising a vertically disposed hollow watercontainer having closed ends and being corrugated to formcircumfcrentially extending hollow heat abstracting ribs projecting fromits outer surface and provided withan outlet opening at its upper endand'an inletconduitentering the container at the upper end of the latterand extending through the water space thereof to a point adjacent thelower end of the container, and an inclosing jacket surrounding thecontainer and sepa 'ated from it by a spacet'orming a passage for theflow of a heating fluid.

5. A. water heater comprising a vertically disposed water containerformed wit-h circumterentially extending heatabstracting ribs on itsouter surface and provided with an outlet opening at its upper endand'an inlet conduit leading from the upper end of the container to apoint adjacent the lower end of the container, and an inclosing jacketsurrounding the-internal coniainer and separated from it by a space toming a passage for the flow of a heating fluid, said jacket havinginternal ribs extending between the ribs of the container.

- 6. A water heater comprising a vertically disposed water containerhaving} heat abstracting spiral formed on its outer surface and providedwith an out etopening at its upper. end and an inlet conduit leadingfrom the upper end of the container to a point adjacent the lower end oithe container. and an inclosingja'eket surrounding the internalcontainer and separated from it by a space tormlng a passage for theflow of a heating fluid. said jacketshaving an internal spiral extendingbetween the convolutions of the spiral on the container.

7. A water heater comprising-a vertically disposed internal watercontainer formed with circun'iferentially extending heatabstracting ribson, its outer surface and provided with inlet. and outlet connections atits upper. end,'an externalwvater container surrounding the internalcontainer and separated from it-by a space forming a passage for theflow of a heating fluid. a pipe connect'ion between the outlet. openingof the internal container and the upper end of the end of the containerand formed adjacent' space in the external container and a (pipeconnection leading from the lower en of the space in the inclosingjacket.

8. X water heater comprising a vertically disposed water containerformed with cireuinferent-ially' extending heat abstracting ribs on itsouter surface and, provided with inlet and outlet connections and an'inclosing. ]acket surrounding said water container and separated from itby a space forming passage for the How of the heating fluid, said jackethaving internal circumferentially extending ribs lying between and proecting toward the space between, the ribs on said container.

9. A water heater comprising a verticallv disposed water containerformed with circuniferential ly extending heat abstracting corrugationsand provided with inlet and outlet connections and an inclosing jacketsurrounding said-water container and sepa-' rated from it by a spaceforming a passage for the flow of the heating fluid, said jacket havinginternal eircuinterent-ially extendin ribs lying between and projectingtowar the spaces between, the ribs formed in the outer surface of saidcontainer by reason of its corrugatimi.

' LUTHER D. LOVEKIN.

uitnesses. i Aurora) KA'rz, D. STEWART.

